Samsung sells a lot of Android phones. It also makes a lot of the electronic components in these phones. Displays, batteries, semiconductors, memory - you name it. And today, the company has announced the industry’s first 8Gb (that’s gigabit) LPDDR4 (low-power double data rate 4) mobile DRAM.

Fabricated on a 20nm-class process, and with 1GB (that’s gigabyte) on a single die, this 8Gb LPDDR4 mobile DRAM is the highest density DRAM in the market to date. And by stacking four such chips, it’s possible to create a single 4GB LPDDR4 package. In other words, it’s now possible to squeeze 4GB of RAM into a smartphone or tablet. In fact, just a few months ago in July, Samsung announced the mass production of its 3GB LPDDR3 module (that uses six 4Gb LPDDR3 chips), and soon after, the Samsung Galaxy Note 3 arrived with 3GB of RAM.

A key feature of the new 8Gb LPDDR4 is its Low Voltage Swing Terminated Logic (LVSTL) I/O interface, which enables a data transfer rate per pin that’s twice as fast as the existing LPDDR3 DRAM. Samsung says that it offers a 50% performance increase compared to the fastest LPDDR3 or DDR3 memory, but at the same time, consumes about 40% less energy at 1.1V.

Of course, the 4GB question is: Would we see it in the Samsung Galaxy S5? That plus a 2K display - these are specs that no one could have ever imagined for a phone just a few years ago.